The powerhouse PR firm that hired and then abruptly fired Anthony Weiner last year has served as a satellite office for the Democratic National Committee, according to internal party emails leaked by Wikileaks.

The batch of nearly 20,000 emails includes entries showing DNC regional fund-raising director Zachary Allen doing business at the Park Avenue South office of the MWW group.

MWW is headed by Michael Kempner, a top fund-raiser for Democratic presidential nominee Hillary Clinton, President Obama and the Democratic Party.

Many of the 18 emails involving MWW show the firm’s staffer Dawn Porters e-mailing Allen to let him known that his ordered food has arrived. A source said Allen was treated like a top company executive.

“I have a delivery for ya,” Porters writes to Allen on May 11.

On May 17, Allen responded to an email from Porters with the subject heading “food.”

“Shoot, I am out — I forgot. Does it smell? I will be back in 15 minutes!,” Allen said from his DNC email address.

Asked about the arrangement, Kempner told The Post, “Allen is an independent contractor to the DNC and pays to rent space from our firm.”

It would be a violation of campaign laws for MWW to give the DNC the space for free without listing it as an in-kind contribution.

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Allen also is featured in an email exchange that won’t help Clinton with LGBT voters.

In a May 20 email to national finance director, Jordan Kaplan, Allen wrote: “Are we back to the point I can say I love you? Because I’d like to. No more cash bar at the wedding!”

Kaplan responds, “I love you too. No homo.”

Kaplan had just informed Allen that his “contract” with DNC “is fine” and wouldn’t be changed.

MWW was embroiled in controversy after The Post revealed last July that Kempner had hired Weiner as a strategic adviser. But Weiner’s history of sending lewd pictures to young women under the moniker “Carlos Danger” did not sit well with MWW clients.

Kempner forced Weiner out two months later, concluding that his presence had “created noise and distraction” that “wasn’t helpful” to the firm.